Here's a weird problem for you guys to solve...
I recently put together a new pc out of some new/old parts.
Basically what happens is I turn on the pc, which boots up fine, except for after the OS loading screen's finished.
After the loading screen is finished the monitor goes into standby mode (No Video Signal)

Here's the weird part. If I unplug the DVI cable, then reattach it, the screen comes up fine. All the drivers for the system are installed, and after reattaching the DVI cable everything works fine.
I tried removing the graphics card and using the onboard graphics, which works fine. So I'm thinking it's gotta be the drivers I'm using for the card.

"As a result of all this hardship, dirt, thirst, and wombats, you would expect Australians to be a sour lot. Instead, they are genial, jolly, cheerful, and always willing to share a kind word with a stranger, unless they are an American." -- Douglas Adams

SOLVED!
Re your suggestion, I checked around in the monitor setup and set everything back to defaults. Rebooted and everything worked!

Tested it a little further, it turns out the refresh rate was the problem. For some reason it didn't like 75Hz refresh rate, which is what I had it set to.
thanks hefe!

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"As a result of all this hardship, dirt, thirst, and wombats, you would expect Australians to be a sour lot. Instead, they are genial, jolly, cheerful, and always willing to share a kind word with a stranger, unless they are an American." -- Douglas Adams